Parallax 29121

Other Hardware Displays
1

Hi,

I've barely done any projects with arduino. So I'm quite a newbie.
I'm trying to make a Parallax 29121 LCD work with my arduino mega (it's a 2 x 8 display).
Is there anybody who could get met started with some basic code? Just some text on the sceen would be nice. I think/hope that I would be able to figure the rest out by myself. I just haven't found any code on this forum that actualy makes something happen on the screen, and yes the power is connected to the screen and yes I tried turning the potmeter in hopes that something would show itself on the screen.

Thanks!

2

Seems to be HD44780 compatible so you can run it with arduino's included liquidcrystal library and examples.

http://www.parallax.com/Portals/0/Downloads/docs/prod/appmod/29121-LcdAppMod-v1.2.pdf

3

thought so too, but the LCD examples give no errors but also nothing on the screen.

4

got it working! thanks, you have to switch around some basic wires for it to work, but it works.

Thanks a lot!

5

You are welcome. I strongly suggest you get a larger display, like 162 or even 204, so you don't have cram data on that smaller display. You can do some nice things if you had a larger display:

Here is what I made with a 20*4 display:

All the features in the video is included in my phi_prompt library, open source.